/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.apache.causeway.extensions.excel.fixtures.demoapp.todomodule.dom;

import java.util.Collections;
import java.util.List;
import java.util.function.Predicate;

public enum Subcategory {
    // professional
    OpenSource, Consulting, Education, Marketing,
    // domestic
    Shopping, Housework, Garden, Chores,
    // other
    Other;

    public static List<Subcategory> listFor(final Category category) {
        return category != null ? category.subcategories() : Collections.<Subcategory>emptyList();
    }

    public static String validate(final Category category, final Subcategory subcategory) {
        if (category == null) {
            return "Enter category first";
        }
        return !category.subcategories().contains(subcategory)
                ? "Invalid subcategory for category '" + category + "'"
                : null;
    }

    public static Predicate<Subcategory> thoseFor(final Category category) {
        return subcategory -> category.subcategories().contains(subcategory);
    }
}
